1,721,006 research outputs found
Thermal Effects On Analog Integrated Circuit Design
No full textAnalog Integrated Circuit design (IC) is a big challenge in this modern age. Thermal effect has a substantial role in analog ICs performance. Thermal effects on analog IC design have been investigated in this dissertation project. National Semiconductor Corporation\u27s Vertical Bipolar Inter-Company (VBIC) model of dielectrically isolated bipolar junction transistors (DIBJT) with VIP10 and VIP11 processes have been used for the research. These devices are used for the high speed IC design. Self-heat generated inside these devices is confined within the device and degrades the device performance. In addition, the thermal characteristic of a device surrounded by the multiple adjacent devices may be different from that of an isolated device because of the thermal coupling effect. These in turn substantially affects the circuit\u27s frequency, dc and time response. This research explored the modeling, characterization, and extraction of the thermal resistance which accounts for both self-heating and thermal coupling effects. Thermal resistance for the self-heating is analyzed and extracted in both frequency and dc methods. Thermal coupling resistance is extracted in dc method with different spacings among the adjacent devices. A new small signal circuit model of a DIBJT is developed for including the self-heating effect. A five element model of the thermal resistance is studied. This five element thermal resistance includes components of thermal resistances from all sides of a dielectrically isolated bipolar device. This includes adjacent device or thermal coupling effect as well. These elements describe multiple thermal poles. A simple time domain analysis is done to show their existence. On the other side, the thermal effects have significant impact on the several analog design\u27s performance or parameters. Therefore, several analog circuits are designed and examined the thermal effect. They are current mirrors, Vbe based bootstrap current source, and high order bandgap reference. Thermal characterization of Y-parameters and output resistance are done as well. Theory, simulations, and measurement results agree with the modeling, characterization, and designs presented in this dissertation. The simulations and measurements have done primarily with cadence Spectre and HP4395A network analyzer, Agilent 87511A S-parameter test set, HP4142B Modular DC Source/Monitor, and ICCAP interfaced evaluation system respectively
Women ward commissioner of reserved seat in urban local government (Municipality) of Bangladehsh: problem and prospect
No full textThis thesis is submitted in partial fulfillment of the requirements for the degree of Masters of Arts in Governance and Development, 2008.Cataloged from PDF version of thesis.Includes bibliographical references (page 47- 52).Md. Mahbub HossainM. Governance and Developmen
Informal Caregiving in the Digital Age
Full text linkInformal caregiving is an important area of public health and social sciences that highlights the roles of family members and other non-formal caregivers who deliver health and social care to people with health problems. Engaging informal caregivers in health promotion in community settings has shown population health benefits; however, informal caregivers may experience a wide range of biopsychosocial challenges while caring for others. Digital health offers promising benefits to address many such challenges in different populations. Despite such emerging opportunities to leverage digital technologies for health promotion, little is known about the digital health behavior among and available interventions for informal caregivers. This dissertation aimed to address this knowledge gap through three research objectives. First, a scientometric study and systematic umbrella review of the global evidence on digital interventions for informal caregivers was conducted using scholarly data from published literature. Second, the Health Information National Trends Survey (HINTS) data was used to examine the predictors of and disparities in online health information-related behavior among informal caregivers in the United States. Lastly, the correlates of perceived usefulness of online medical records among informal caregivers in the United States were evaluated using the same data. Through these overarching objectives, this dissertation aimed to understand critical aspects of digital health behavior, interventions, and health outcomes. Such knowledge may inform future research examining different behavioral aspects, and enable the development of robust evidence-based interventions for promoting health among informal caregivers, people they care for, and populations in general
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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